Rev 6110 | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
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6110 | serge | 1 | /* |
2 | * Copyright © 2014 NVIDIA Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice shall be included in |
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12 | * all copies or substantial portions of the Software. |
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13 | * |
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14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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20 | * OTHER DEALINGS IN THE SOFTWARE. |
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21 | */ |
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22 | |||
23 | #ifndef LIBDRM_LIBDRM_H |
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24 | #define LIBDRM_LIBDRM_H |
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25 | |||
26 | #if defined(HAVE_VISIBILITY) |
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27 | # define drm_private __attribute__((visibility("hidden"))) |
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28 | #else |
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29 | # define drm_private |
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30 | #endif |
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31 | |||
32 | |||
33 | /** |
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34 | * Static (compile-time) assertion. |
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35 | * Basically, use COND to dimension an array. If COND is false/zero the |
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36 | * array size will be -1 and we'll get a compilation error. |
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37 | */ |
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38 | #define STATIC_ASSERT(COND) \ |
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39 | do { \ |
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40 | (void) sizeof(char [1 - 2*!(COND)]); \ |
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41 | } while (0) |
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42 | |||
43 | |||
44 | |||
45 | #if defined(ANDROID) && !defined(__LP64__) |
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46 | #include |
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47 | |||
48 | extern void *__mmap2(void *, size_t, int, int, int, size_t); |
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49 | |||
50 | static inline void *drm_mmap(void *addr, size_t length, int prot, int flags, |
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51 | int fd, loff_t offset) |
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52 | { |
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53 | /* offset must be aligned to 4096 (not necessarily the page size) */ |
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54 | if (offset & 4095) { |
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55 | errno = EINVAL; |
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56 | return MAP_FAILED; |
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57 | } |
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58 | |||
59 | return __mmap2(addr, length, prot, flags, fd, (size_t) (offset >> 12)); |
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60 | } |
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61 | |||
62 | # define drm_munmap(addr, length) \ |
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63 | munmap(addr, length) |
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64 | |||
65 | |||
66 | #else |
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67 | |||
68 | #endif |
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69 | |||
70 | #endif |